Taking into account the local weather in České Heřmanice can help you maximize your time at the pool during your trip. The hottest months are usually August and July with an average temp of 62°F, while the coldest months are January and February with an average of 32°F. The snowiest months in České Heřmanice are December, November, January, and February, with each month seeing an average of 7 inches of snowfall.